Question about streptomycin sulfate precipitation

Duncan Clark blackhole at
Thu Jan 5 06:01:33 EST 2006

Historians believe that in newspost 
<mailman.650.1136330661.29584.methods at> on Tue, 3 Jan 2006, 
Igal Finarov <igal.finarov at> penned the following literary 
>I saw in Internet that you had the same question I have: what is the
>percent of  streptomycin sulfate  needed to precipitate DNA. Can you
>please share  with me your knowledge on that issue.

Find any 1960's or early 70's molecular biology enzyme purification 
paper and you will invariably find that they used Streptomycin sulphate 
pptation prior to loading their first column. Subsequently Polymin P 
pptation came along. Just be very careful about pptating the protein you 
may want with too much of either. You can't always back recover it.

I love deadlines. I especially like the whooshing noise they make as
they go flying by.

Duncan Clark
GeneSys Ltd.

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